860 ON THE ALCYONARIANS OF THE SCOTTISH ANTARCTIC EXPEDITION. 
The larger spicules are rods with rounded or swollen ends, and have the following 
dimensions in mm. :—2'5 x 0°25, 2x 0°2, 2x 0°15, 1°8x 0°18, 1°45 x 0°125, 1 2X0 
12x01. Besides these there are minute rods, 0°14 x 0°023, 0°1 x 0°02. 
Locality.—48° 06’ 8., 10° 5’ W. Bottom at 1742 fathoms, pebbles and diatom ooze. 
Surface temperature 40°8° F. 
EXPLANATION OF PLATES. 
Prats I. 
Fig. 1. Thouarella brucei, n. sp. A branch with twigs. Nat. size. 
Fig. 2. Primnoisis ramosa, n. sp. A portion of the axis with branches, Nat. size. 
Fig. 3. Primnoella magellanica, Studer. Three whorls of polyps. x9 
Fig. 4. Gorgonia studeri, n, sp. The whole fragment, natural size; and a portion of the axis with 
verruce, magnified about 10 times. 
Fig. 5. Umbellula durissima, Kolliker. The largest head, magnified about 24 times. 
Fig. 6. Paramuricea robusta, n. sp. A small piece of a branch with verruce, magnified about 2 times. 
Fig 7. Gorgonia wrighti, n. sp. Showing the mode of branching. Nat. size, — 
Fig. 8. Gorgonia wrighti, u. sp. A portion of the axis, showing the chambers, magnified about 10 times, 
Pirate II, 
Fig. 1. Thouarella brucei, n. sp. 
Fig. 2. Paramuricea robusta, n. sp. 
Fig. 3. Primnoella scotiz, n. sp. 
Fig. 4. Gorgonia studert, n. sp. 
Fig. 5. Amphilaphis regularis, Wright and Studer. 
Fig. 6. Gorgonia wrighti, n. sp. 
Fig. 7. Paramuricea robusta, n. sp. A small portion with two verruce. x 10. 
Fig. 8. Primnoella scotiz, n. sp. The apex with four whorls of polyps. x 8, 
Fig. 9. Gorgonia wrighti, n. sp. A small portion of the stem. x 10. 
